I wanted to say confirmed for the latest snapshot (20w13b), but actually, after installing the correct audio drivers the directional sound system works perfectly for me on multiple snapshots and releases tested (no fully-quiet sounds when facing opposite from them). So I think this is just a driver issue. (the default windows driver 'High Definition Audio Device' probably just doesn't support it correctly)
Gábor Tóth
I wanted to say confirmed for the latest snapshot (20w13b), but actually, after installing the correct audio drivers the directional sound system works perfectly for me on multiple snapshots and releases tested (no fully-quiet sounds when facing opposite from them). So I think this is just a driver issue. (the default windows driver 'High Definition Audio Device' probably just doesn't support it correctly)